Roller side bearing.



C. B. PATCH.

ROLLER SIDE BEAR|NG'- APPLICATION FILED ocr. 9. 1914.

Patehted Oct. 12, 1915.

' 2 SHEETS-SHEET 1.

If} NINVENTOR.

@lvmfl Pai'c/o "ATTORNEY WITNESSES CALVIN B. PATCH, OF GLENELLYN,ILLINOIS, ASSIGNOR. T0 WILLIAM H. MINER, 0F

CHAZY, NEW YORK.

ROLLER SIDE BEARING.

Specification of Letters Patent.

Patented Oct. 12, 1e15,

Application filed October 9, 1914. Serial No. 865,813.

To all whom it may concern.

Be it known thatI, CALVIN B. PATCH, a citizen of the United States,residing at Glenellyn, in the county of Dupage and State of Illinois,have invented a certain new and useful Improvement in Roller SideBearings, of which the following is a full, clear, concise, and exactdescription, reference being had to'the accompanying drawings, forming apart of this specification.

This invention relates to improvements in roller side bearings.

The object of the invention is to provide a roller side bearing forrailway cars of cheap construction wherein means are provided forautomatically returning the antifriction roller to central or normalposition each time after it has served its function as an antifrictionbearing between the car bolsters.

In the drawing forming a part of this specification, Figure 1 is anelevation of 44 of Fig, 3. Fig. 5 is an end elevation of another form ofroller bearing and Fig.

6 is a vertical sectional view of the structure shown in Fig. 5 andtaken on the line 55 of the latter, parts of the bolsters being shown insections in each of Figs. 5 and 6.

Referring now to Figs. 1 to 4 inclusive, 10 denotes the body bolster and11 the truck bolster 'of a railway car swiveled at the center andprovided with my improved bearings on each side of the center. As shown,the body bolster is provided with an integral dependingbearing plate 12and the truck bolster has secured thereto my improved bearing memberdesignated generally by the reference A. Each bearing .member A, asshown, preferably comprises a bearing plate 13 riveted or otherwisesuitably secured to the truck bolster, the bearing plate 13 havingspaced upstanding arms 14, 14 at each corner thereof, each pair ofarms'14 on the inner and outer sides of the plate having in integralfixed tread surface 15 extending therebetween. The plate 13, between thetread surfaces 15, 15 is cut away as indicated clearance for ananti-friction roller 17 the latter having trunnions of reduced diameteron each side thereof, the trunnions 18, 18 I.

being formed integrally and preferably constituting the ends of a shortcase hardened steel shaft extending through the roller. Each of thetread surfaces 15 isprovided with a centrally located, longitudinallyex-' tending narrow slot 19 in which is reciprocatingly mounted amovable centering plate 20 having oppositely inclined upper treadsurfaces 21, each plate 20 being limited in its upward movement by meansof a pin and slot connection 22. Each plate 20 is normally pressedupwardly so as to have the tread surfaces 21 thereof in a plane abovethe tread surfaces 15, by coil springs 23, 23 seated in suitable sockets24 in the bearing plate 13. The springs are held up at their insertedfrom the under side of the plate 13. Between each pair of upstandingarms 14, 14 extends a more or less flexible retaining clip or bar 26 toprevent the roller 17 from becoming displaced.

Under normal conditions, the plates 2O elevate the roller 17 by engagingthe trunnions 18, 18 thereof .to the position shown in Figs. 3 and 4.When the ends of the body bolster and truck bolster approach each other,the roller 17 will be depressed and the plates 20, 20 forced into theirrecesses 19 until the trunnions are brought into engagement with thefixed tread surfaces 15, 15, the pressure being transmitted through thelatter to the truck bolster. On account of the reduced diameters of thetrunnions, it is apparent that the amount of surface travel of the sameis much less than the surface travel of the anti-friction roller 17 whenthe latter is caused torota-te due to the relative swinging movement ofthe bolsters, which is a desirable feature in that it reduces the wear.After the roller has been rotated oif'to one side of its normal positionand released, the plates 20, 20 will be lifted upwardly and the rollerreturned to its central normal position since the trunnions 18 will rolldown the inclined tread surfaces 21,21 under the influence of gravity,thus insuring the proper positioning of the roller at all times.

- In Figs. 5 and 6, the bearing plate, antifaces and retaining" bars areor may be of the same construction as those shown in Figs. 1 to a andpreviously described. In- Stead of emplo ing coil springs for actuatingthe movable reciprocating plates 121 for centering the roller, reverselycurved leaf springs 122 are employed seated in the same elongatedrecesses 119 as those in which the plates 121 reciprocate.

Although I have herein described in detail structures embodying myinvention, the same are merely illustrative and I do not wish to belimited to the details shown and described inasmuch as I am. aware thatchanges and modifications may be made Without departing from the spiritoithe invention.

I claim:

1. In a roller side bearing, a bearing plate having fixed treadsurfaces, an anti-friction roller mounted on said plate and havingtrunnions of reduced diameter adapted to bear and roll on said treadsurfaces, and depressible centering plates for said roller engaging thetrunnions thereof, said plates having inclined tread surfaces.

2. In a roller side bearing for railway cars, a bearing member adaptedto be secured to a't'ruck and having a fixed tread surface, ananti-fricticn roller bodily movably mounted on said bearing plate, and amovable tread surface mounted on said bearing plate having inclinedtread .sur-

faces normally holding said roller out of engagement with the fixedtread surface and adapted to be depressed to permit'the roller to engagethe tread surface.

masons roller having trunnions adapted "to bear on said fixed surfaces,and movable tread sur-.

faces engaging said trunnions and adapted to elevate the latter, undernormal conditions, from engagement with the fixed tread surfaces.

.5.-=ln a roller side hearing for railway cars, a bearing plate adaptedto be secured to a bolster and having spaced, parallel fixed treadsurfaces, an anti-friction roller having trunnions adapted to engage andbear on said tread surfaces, a movable plate associated with each ofsaid fixed tread surfaces and adapted to engage the trunnions, each ofsaid plates having inclined tread surfaces to thereby return the rollerto its normal central position, means for preventing accidental removalof the roller from the hearing plate, and springs actuating said movableplates. v

' CALVlIN B. PATCH. Witnesses CARRIE Gr. RANZ,

Lnoinnn Hreems.

